Do not refer the proxy_env variable.

tasks/http_client_proxy.yml

@@ -3,9 +3,7 @@
   block:
   - name: Install the proxy environment file
     template: src=10-caching-proxy.sh.j2 dest=/etc/profile.d/10-caching-proxy.sh owner=root group=root mode=0444
-    when:
-      - proxy_env is defined
-      - enable_env_proxy | bool
+    when: enable_env_proxy | bool
 
   - name: Remove the proxy environment file if not required
     template: src=10-caching-proxy.sh.j2 dest=/etc/profile.d/10-caching-proxy.sh owner=root group=root mode=0444

templates/10-caching-proxy.sh.j2

@@ -1,5 +1,5 @@
 {% for proto in env_proxy_protocols %}
-export {{ proto }}="{{ proxy_env.http_proxy }}"
+export {{ proto }}="{{ env_proxy_http_url }}"
 {% endfor %}
 export no_proxy="{% for target in no_proxy_targets %}{{ target }}{% if not loop.last %},{% endif %}{% endfor %}"
 export NO_PROXY="{% for target in no_proxy_targets %}{{ target }}{% if not loop.last %},{% endif %}{% endfor %}"